Post on 19-Dec-2015
description
User
W-V
r manual W
VACi 12 /
W-VACi
17.5 / 24
kV IEC VVacuum CCircuit Brreakers
2 65A7355H01 December 2010 www.eaton.com
65A7355H01 December 2010 www.eaton.com 3
Table of contents
1 Safety ................................................................................................................................. 5 1.1 Safety precautions .................................................................................................................................. 5 1.2 Safety practices ....................................................................................................................................... 5
2 Product Summary ............................................................................................................. 6 2.1 Standards and Specifications ................................................................................................................. 6 2.2 Technology Parameters .......................................................................................................................... 6 2.3 Technical Parameters 12 kV W-VACi IEC Circuit Breaker .................................................................... 7 2.4 Technical Parameters 17.5 kV W-VACi IEC Circuit Breaker ................................................................. 8 2.5 Technical Parameters 24 kV W-VACi IEC Circuit Breaker .................................................................... 9 2.6 Operating Conditions ............................................................................................................................ 10 2.7 Breaker Description ............................................................................................................................... 10 2.8 Outline and Dimensions ........................................................................................................................ 11
3 Receiving, handling and storage .................................................................................... 30 3.1 Receiving ............................................................................................................................................... 30 3.2 Handling ................................................................................................................................................ 30 3.3 Storage .................................................................................................................................................. 30 3.4 Lifting of Circuit Breakers ...................................................................................................................... 31 3.5 W-VACi Circuit Breaker Weights .......................................................................................................... 31 3.6 Photographic Description ...................................................................................................................... 32
4 Inspection ......................................................................................................................... 34 4.1 Inspection .............................................................................................................................................. 34 4.2 Frequency of Inspection ........................................................................................................................ 34 4.3 Inspection Process ................................................................................................................................ 34 4.4 Vacuum Interrupter Integrity Test ......................................................................................................... 34 4.5 Insulation Inspection ............................................................................................................................. 34 4.6 Main Circuit Resistance Check ............................................................................................................. 35 Mechanism Inspection Check ......................................................................................................................... 35 4.7 Torque specifications ............................................................................................................................ 35 4.8 Troubleshooting Chart .......................................................................................................................... 37
5 Installation checks and Functional Tests ...................................................................... 39 5.1 Initial Inspection and Operation ............................................................................................................ 39 5.2 Manual Operation Check ...................................................................................................................... 39 5.3 Nameplate ............................................................................................................................................. 40 5.4 Vacuum Interrupter Integrity Check ...................................................................................................... 40 5.5 Insulation ............................................................................................................................................... 40 5.6 Main Circuit Resistance Check ............................................................................................................. 40 5.7 Electrical Operations Check.................................................................................................................. 40 5.8 Racking handle ..................................................................................................................................... 41 5.9 Circuit Breaker Interaction with Switchgear .......................................................................................... 41 5.10 IEC Standard Interlocks ................................................................................................................... 42 5.11 Unitole UX Gear Door Interlocks...................................................................................................... 42 5.12 Electromagnetic interlock ................................................................................................................. 42 5.13 Unique OEM Interlocks .................................................................................................................... 42
6 Operation .......................................................................................................................... 43 6.1 Encapsulated Pole Units ....................................................................................................................... 43 6.2 Electrical Circuit .................................................................................................................................... 43
4 65A7355H01 December 2010 www.eaton.com
6.3 Operating Mechanism ........................................................................................................................... 43 6.4 Charging ................................................................................................................................................ 44 6.5 Closing .................................................................................................................................................. 44 6.6 Opening ................................................................................................................................................. 46 6.7 Control Schemes ................................................................................................................................... 46 6.8 Selective Parts Configuration ............................................................................................................... 46
7 Renewal parts ................................................................................................................... 57 7.1 General .................................................................................................................................................. 57 7.2 Ordering Instructions ............................................................................................................................. 57 7.3 Standard accessories ........................................................................................................................... 57 7.4 Optional accessories ............................................................................................................................. 60
8 Appendix .......................................................................................................................... 62 8.1 12 / 17.5 / 24 kV W–VACi Vacuum Circuit Breaker Operational Check List........................................ 62 8.2 W–VACi Vacuum Circuit Breaker Equipment Check List ..................................................................... 63
65A7355H01 December 2010 www.eaton.com 5
1 Safety W-VACi vacuum circuit breakers are equipped with high speed, high energy operating mechanisms. They are designed with several built-in interlocks and safety features to provide safe and proper operating sequences.
1.1 Safety precautions All safety codes, safety standards and/or regulations must be strictly observed in the installation, operation and inspection of this device.
WARNING WARNING indicates a hazard with a medium level of risk which, if not avoided, may result in death or serious bodily injury
CAUTION CAUTION indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury or property damage only.
1.2 Safety practices
WARNING To protect the personnel associated with installation, operation, and inspection of these breakers, the following practices must be followed:
• As defined in the local electrical code, only
qualified persons who are familiar with the installation and Inspection of medium voltage circuits and equipment should be permitted to work on these breakers.
• Read these instructions carefully before attempting any installation, operation or inspection of these breakers.
• Always remove the withdrawable breakers from their enclosures before performing any inspection. Failure to do so could result in electrical shock leading to death, severe personal injury or property damage.
• Do not work on a breaker with the secondary test coupler engaged or fixed secondary connections made. Failure to disconnect the test coupler could result in an electrical shock leading to death, personal injury or property damage.
• Do not work on a closed breaker or a breaker with closing springs charged. The closing spring should be discharged and the main contacts open before working on the breaker. Failure to do so could result in cutting or crushing injuries.
• Do not use a withdrawable circuit breaker by itself as the only mean of isolating a high voltage circuit, remove the circuit breaker to the DISCONNECT POSITION and follow correct lock-out and tagging
rules, as well as all applicable codes, regulations and work rules.
• Do not leave a withdrawable circuit breaker in an intermediate position in the cell. Always have the circuit breaker either in the “Test” or “Service” position. Failure to do so could result in a flash over, death, personal injury or property damage.
• Always re-insert the handle into the front panel of the breaker after charging the closing springs. Otherwise the circuit breaker will not operate.
• Circuit breaker elements are equipped with safety interlocks. DO NOT remove, interfere with or in any manner defeat the safety interlocks. This may result in death, bodily injury or equipment damage.
• All personnel involved in operations carried out on, with or near electrical installations, require to have been instructed on the safety requirements, safety rules and instructions applicable to the operation of the installation.
• Ensure that access and escape routes are free at all times. Do not leave flammable materials in or near access and escape routes.
• Flammable materials must not be stored in areas which could be affected by arcs, such as: ethers, alcohols and alcohol based cleaners. In the event of a fire, never attempt to extinguish a fire on the switchgear unit before it is completely dead; this applies to both primary and secondary switchgear. Even if non-conducting extinguishing materials are used, electricity may pass through the extinguishing equipment. Never extinguish a fire on the unit with water.
WARNING The circuit breaker elements described in this book are designed and tested to operate within their nameplate ratings. Operation outside of these ratings may cause the equipment to fail, resulting in death, bodily injury and property damage. These circuit breaker elements are designed to be installed pursuant to the iec standards. Serious injury, including death, can result from failure to follow the procedures outlined in this manual. These circuit breaker elements are sold pursuant to a non-standard purchasing agreement which limits the liability of the manufactor.
6 65A7355H01 December 2010 www.eaton.com
2 Product Summary The purpose of this book is to provide instructions for the unpacking, storage, installation, operation and inspection of W-VACi IEC vacuum circuit breakers for qualified personnel. Reliable control and protection of short circuit current can be achieved through the application of W-VACi vacuum circuit breakers in 12 / 17.5 / 24kV air insulated switchgear. Legal and other regulations and documents pertaining to accident prevention, personal safety and environmental protection must be observed. Operations involving the repair of the breaker are to be carried out by or under the approval of Eaton. Information with respect to these operations is, therefore, not included in this manual. If further information is required by the purchaser regarding a particular installation, application or inspection activity, an Eaton representative should be contacted.
2.1 Standards and Specifications W-VACi IEC circuit breakers are designed and third party tested to the latest IEC 62271-100 and IEC 62271-1 standards. All W-VACi circuit breakers meet or exceed the electrical and mechanical endurance requirements of E2 and M2, in accordance with IEC 62271-100.
2.2 Technology Parameters Charts on the following pages include all technical parameters for the IEC standard 12 / 17.5 / 24kV W-VACi vacuum circuit breakers.
65A7355H01 December 2010 www.eaton.com 7
2.3 Technical Parameters 12 kV W-VACi IEC Circuit Breaker Item Unit 12kV W-VACi
Voltage (Ur) kV 12 12 12 12
Normal Current(Ir) A
630
800
1250
1600
2000
630
800
1250
1600
2000
630
800
1250
1600
2000
1250
1600
2000
Short-Time Withstand Current(Ik)
kA 25 25 25 25 25 26.3 26.3 26.3 26.3 26.3 31.5 31.5 31.5 31.5 31.5 40 40 40
Short Circuit Breaking Current(Isc)
kA 25 25 25 25 25 26.3 26.3 26.3 26.3 26.3 31.5 31.5 31.5 31.5 31.5 40 40 40
Duration of Short Circuit(tk) sec 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
Frequency(fr) Hz 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60 50/60
Short circuit Making Current(Ima)
kA 63/ 65
63/ 65
63/ 65
63/ 65
63/ 65 66/65 66/- 66/- 66/- 66/- 79/82 79/82 79/82 79/82 79/82 100/10
4 100/ 104
100/ 104
Contact Closing Bounce Time ms ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2
Time Difference of Three Pole Opening and Closing ms ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2
Fixed Resistance1 µΩ ≤35 ≤35 ≤35 ≤20 ≤15 ≤35 ≤35 ≤35 ≤20 ≤15 ≤20 ≤20 ≤20 ≤20 ≤15 ≤15 ≤15 ≤15
DO Resistance1 µΩ ≤45 ≤45 ≤45 ≤35 ≤30 ≤45 ≤45 ≤45 ≤35 ≤30 ≤35 ≤35 ≤35 ≤35 ≤30 ≤30 ≤30 ≤30
Closing Time ms 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70 30~70
Opening Time ms 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60 40~60
Closing Speed1 m/s 0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
Opening Speed1 m/s 1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
D.C. Component of Breaking Current(Idc)
% 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35 29-35
Cable-Charging Breaking Current (C2) A 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25
Single Capacitor Bank Breaking Current (C2) A 400 - - - - 400 - - - - - - - - - - - -
Back to Back Capacitor Bank Breaking Current (C1) A 400 - - - - 400 - - - - - - - - - - -
Pole to Pole Spacing (Center to Center) mm 150 150 150 210 210 150 150 150 210 210 150 150 150 210 210 210 210 210
Upper to Lower Terminal Spacing mm 205 275 275 310 310 205 275 275 310 310 275 275 275 310 310 310 310 310
Mechanical Endurance2 Cycle 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k
Electrical Endurance Cycle 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k
Rated Insulation
Level
Rated Lighting Impulse
Withstand Voltage(Up)
kV 28 28 28 28
Rated Power Frequency Withstand
Voltage(Ud)
kV 75 75 75 75
Operating Sequence O-0.3s-CO-15s-CO
Classification E2-M2-S1
1: Testing configurations available upon request 2: 20K operations can be achieved on the 12kV, 25 kA Breaker
8 65A7355H01 December 2010 www.eaton.com
2.4 Technical Parameters 17.5 kV W-VACi IEC Circuit Breaker
Item Unit 17.5kV W-VACi
Voltage (Ur) kV 17.5 17.5 17.5
Normal Current(Ir) A
630
800
1250
1600
2000
630
800
1250
1600
2000
1250
1600
2000
Short-Time Withstand Current(Ik) kA 25 25 25 25 25 31.5 31.5 31.5 31.5 31.5 40 40 40
Short Circuit Breaking Current(Isc) kA 25 25 25 25 25 31.5 31.5 31.5 31.5 31.5 40 40 40
Duration of Short Circuit(tk) sec 3 3 3 3 3 3 3 3 3 3 3 3 3
Frequency(fr) Hz 50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60 50/60
Short circuit Making Current(Ima) kA 63/
65 63/ 65
63/ 65
63/ 65
63/ 65
79/82
79/82
79/82
79/82
79/82
100/104
100/ 104
100/ 104
Contact Closing Bounce Time ms ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2
Time Difference of Three Pole Opening and Closing ms ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2 ≤ 2
Fixed Resistance1 µΩ ≤35 ≤35 ≤35 ≤20 ≤15 ≤20 ≤20 ≤20 ≤20 ≤15 ≤15 ≤15 ≤15
DO Resistance1 µΩ ≤45 ≤45 ≤45 ≤35 ≤30 ≤35 ≤35 ≤35 ≤35 ≤30 ≤30 ≤30 ≤30
Closing Time ms 30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
30~70
Opening Time ms 40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
40~60
Closing Speed1 m/s 0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
0.7~1.3
Opening Speed1 m/s 1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
1.0~1.7
D.C. Component of Breaking Current(Idc) % 29-
35 29-35
29-35
29-35
29-35
29-35
29-35
29-35
29-35
29-35
29-35
29-35
29-35
Cable-Charging Breaking Current (C2) A 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5
Single Capacitor Bank Breaking Current (C2) A 400 - - - - - - - - - - - -
Back to Back Capacitor Bank Breaking Current (C1) A 400 - - - - - - - - - - - -
Pole to Pole Spacing (Center to Center) mm 150 150 150 210 210 150 150 150 210 210 210 210 210
Upper to Lower Terminal Spacing mm 205 275 275 310 310 275 275 275 310 310 310 310 310
Mechanical Endurance Cycle 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k
Electrical Endurance Cycle 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k
Rated Insulation
Level
Rated Power Frequency Withstand
Voltage(Ud)
kV 38 38 38
Rated Lighting Impulse
Withstand Voltage(Up)
kV 95 95 95
Operating Sequence O-0.3s-CO-15s-CO
Classification E2-M2-S1
1: Testing configurations available upon request
65A7355H01 December 2010 www.eaton.com 9
2.5 Technical Parameters 24 kV W-VACi IEC Circuit Breaker
Item Unit 24kV W-VACi
Voltage (Ur) kV 24 24
Normal Current(Ir) A 800 1600 2000 2500
Short-Time Withstand Current(Ik)
kA 20 25 25 25
Short Circuit Breaking Current(Isc)
kA 20 25 25 25
Duration of Short Circuit(tk) sec 3 3 3 3
Frequency(fr) Hz 50/60 50/60 50/60 50/60
Short circuit Making Current(Ima)
kA 50/52 63/65 63/65 63/65
Contact Closing Bounce Time ms ≤2 ≤2 ≤2 ≤2
Time Difference of Three Pole Opening and Closing ms ≤2 ≤2 ≤2 ≤2
Fixed Resistance1 µΩ 31.5 31.5 31.5 31.5
DO Resistance1 µΩ ≤30 ≤30 ≤30 ≤30
Closing Time ms 30~70 30~70 30~70 30~70
Opening Time ms 40~60 40~60 40~60 40~60
Closing Speed1 m/s 0.7~1.3 0.7~1.3 0.7~1.3 0.7~1.3
Opening Speed1 m/s 1.0~1.7 1.0~1.7 1.0~1.7 1.0~1.7
D.C. Component of Breaking Current(Idc)
% 30 30 30 30
Cable-Charging Breaking Current (C2) A 31.5 31.5 31.5 31.5
Single Capacitor Bank Breaking Current (C2) A - - - -
Back to Back Capacitor Bank Breaking Current
(C1) A - - - -
Pole to Pole Spacing (Center to Center) mm 210 275 275 275
Upper to Lower Terminal Spacing mm 310 310 310 310
Mechanical Endurance Cycle 10k 20k 20k 20k
Electrical Endurance Cycle 10k 20k 20k 20k
Rated Insulation
Level
Rated Power Frequency Withstand
Voltage(Ud)
kV 60 60 60 60
Rated Lighting Impulse
Withstand Voltage(Up)
kV 125 125 125 125
Operating Sequence O-0.3s-CO-15s-CO
Classification E2-M2-S1
1: Testing configurations available upon request
10 65A7355H01 December 2010 www.eaton.com
2.6 Operating Conditions W-VACi breakers are designed for switchgear mounted in indoor areas under normal service conditions (ambient air temperature, altitude, humidity, etc.) as laid out is IEC60694 clause 2.1.1.
Table 2-1: Operating Conditions
Ambient Temperature:
Maximum = +40°C
Minimum = -5°C
Altitude:
Do not exceed 1000m
For applications above 1000 m de-rating is required
Service Site:
The environment shall be free of water, flame, and/or explosive hazard.
No chemical corrosive gases, and/or intensive vibration.
2.7 Breaker Description 12kV/17.5kV/24 kV RATED VOLTAGE (kV) IDENTIFICATION
W-VACi or W-VACiR WITHDRAWABLE (W-VACi) OR FIXED(W-VACiR)
VACUUM CIRCUIT BREAKER
20/25/26.3/31.5/40/50 RATED SHORT CIRCUIT BREAKING CURRENT (kA)
630/800/1250/1600/2000 NORMAL CURRENT (A)
150/210/275 POLE SPACING (mm)
Fig. 2-1: Breaker Description
65A7355H01 December 2010 www.eaton.com 11
2.8 Outline and Dimensions
Table 2-2: List of Available Breaker Frames
Voltage (kV) Continuous
current (A)
Interrupting current
(kA)
Pole Spacing
(mm)
Upper to Lower
terminal spacing
(mm)
Withdrawable Breaker Frame
Withdrawable Breaker Frame Page Number
Fixed Breaker Frame
Fixed Breaker
Frame Page Number
12
630 25 150 205 12W-1 12 12F-1 21 800 25 150 275 12W-2 13 12F-2 22
1250 25 150 275 12W-2 13 12F-2 22 1600 25 210 310 12W-3 14 12F-3 23 2000 25 210 310 12W-3 14 12F-3 23 630 26.3 150 205 12W-1 12 12F-1 21 800 26.3 150 275 12W-2 13 12F-2 22
1250 26.3 150 275 12W-2 13 12F-2 22 1600 26.3 210 310 12W-3 14 12F-3 23 2000 26.3 210 310 12W-3 14 12F-3 23 630 31.5 150 275 12W-2 13 12F-2 22 800 31.5 150 275 12W-2 13 12F-2 22
1250 31.5 150 275 12W-2 13 12F-2 22 1600 31.5 210 310 12W-3 14 12F-3 23 2000 31.5 210 310 12W-3 14 12F-3 23 1250 40 210 310 12W-3 14 12F-3 23 1600 40 210 310 12W-3 14 12F-3 23 2000 40 210 310 12W-3 14 12F-3 23
17.5
630 25 150 205 17.5W-1 15 17.5F-1 24 800 25 150 275 17.5W-2 16 17.5F-2 25
1250 25 150 275 17.5W-2 16 17.5F-2 25 1600 25 210 310 17.5W-3 17 17.5F-3 26 2000 25 210 310 17.5W-3 17 17.5F-3 26 630 31.5 150 275 17.5W-2 16 17.5F-2 25 800 31.5 150 275 17.5W-2 16 17.5F-2 25
1250 31.5 150 275 17.5W-2 16 17.5F-2 25 1600 31.5 210 310 17.5W-3 17 17.5F-3 26 2000 31.5 210 310 17.5W-3 17 17.5F-3 26 1250 40 210 310 17.5W-3 17 17.5F-3 26 1600 40 210 310 17.5W-3 17 17.5F-3 26 2000 40 210 310 17.5W-3 17 17.5F-3 26
24
800 20 210 310 24W-1 18 24F-1 27 1600 25 275 310 24W-2 19 24F-2 28 2000 25 275 310 24W-2 19 24F-2 28 2500 25 275 310 24W-3 20 24F-3 29
Fixed (F) or Withdrawable (W)
Frame 1
Rated Voltage (kV)
Frame Description:
Example: 12 W – 1
12 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-2: 12kV Withdrawable W-VACi Circuit Breaker Frame 12W-1
Applicable Ratings
Voltage Breaking Current
Normal Current
12kV 25kA 630A 12kV 26.3kA 630A
65A7355H01 December 2010 www.eaton.com 13
All Dimensions are in millimeters
Fig. 2-3: 12kV Withdrawable W-VACi Circuit Breaker Frame 12W-2
Applicable Ratings
Voltage Breaking Current Normal Current
12kV 25kA 630A 800A NA 26.3kA 630A 800A NA 31.5kA 630A 800A 1250A
14 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-4: 12kV Withdrawable W-VACi Circuit Breaker Frame 12W-3
Applicable Ratings
Voltage Breaking Current Normal Current
12kV
25kA NA 1600A1 2000A2 26.3kA NA 1600A1 2000A2 31.5kA NA 1600A1 2000A2 40kA 1250A1 1600A1 2000A2
1 These ratings do not use a heat sink
2 These ratings do use a heat sink
65A7355H01 December 2010 www.eaton.com 15
All Dimensions are in millimeters
Fig. 2-5: 17.5 kV Withdrawable W-VACi Circuit Breaker Frame 17.5W-1
Applicable Ratings
Voltage Breaking Current
Normal Current
17.5kV 25kA 630A
16 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-6: 17.5 kV Withdrawable W-VACi Circuit Breaker Frame 17.5W-2
Applicable Ratings
Voltage Breaking Current Normal Current
17.5kV 25kA 630A 800A NA 31.5kA 630A 800A 1250A
65A7355H01 December 2010 www.eaton.com 17
All Dimensions are in millimeters
Fig. 2-7: 17.5 kV Withdrawable W-VACi Circuit Breaker Frame 17.5W-3
Applicable Ratings
Voltage Breaking Current Normal Current
17.5kV 25kA NA 1600A1 2000A2 31.5kA NA 1600A1 2000A2 40kA 1250A1 1600A1 2000A2
1 These ratings do not use a heat sink 2 These ratings do use a heat sink
18 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-8: 24 kV Withdrawable W-VACi Circuit Breaker Frame 24W-1
Applicable Ratings
Voltage Breaking Current
Normal Current
24kV 20kA 800A
65A7355H01 December 2010 www.eaton.com 19
All Dimensions are in millimeters
Fig. 2-9: 24 kV Withdrawable W-VACi Circuit Breaker Frame 24W-2
Applicable Ratings
Voltage Breaking Current Normal Current
24kV 25kA 1600A1 2000A2 1 These ratings do not use a heat sink 2 These ratings do use a heat sink
20 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-10: 24 kV Withdrawable W-VACi Circuit Breaker Frame 24W-3
Applicable Ratings
Voltage Breaking Current
Normal Current
24kV 25kA 2500A
65A7355H01 December 2010 www.eaton.com 21
All Dimensions are in millimeters
Fig. 2-11: 12kV Fixed W-VACi Circuit Breaker Frame 12F-1
Applicable Ratings
Voltage Breaking Current
Normal Current
12kV 25kA 630A
26.3kA 630A
22 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-12: 12kV Fixed W-VACi Circuit Breaker Frame 12F-2
Applicable Ratings
Voltage Breaking Current Normal Current
12kV 25kA 630A 800A NA 26.3kA 630A 800A NA 31.5kA 630A 800A 1250A
65A7355H01 December 2010 www.eaton.com 23
All Dimensions are in millimeters
Fig. 2-13: 12kV Fixed W-VACi Circuit Breaker Frame 12F-3
Applicable Ratings
Voltage Breaking Current Normal Current
12kV
25kA NA 1600A1 2000A2 26.3kA NA 1600A1 2000A2 31.5kA NA 1600A1 2000A2 40kA 1250A1 1600A1 2000A2
1 These ratings do not use a heat sink 2 These ratings do use a heat sink
24 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-14: 17.5kV Fixed W-VACi Circuit Breaker Frame 17.5F-1
Applicable Ratings
Voltage Breaking Current
Normal Current
17.5kV 25kA 630A
65A7355H01 December 2010 www.eaton.com 25
All Dimensions are in millimeters
Fig. 2-15: 17.5kV Fixed W-VACi Circuit Breaker Frame 17.5F-2
Applicable Ratings
Voltage Breaking Current Normal Current
17.5kV 25kA 630A 800A NA 31.5kA 630A 800A 1250A
26 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-16: 17.5kV Fixed W-VACi Circuit Breaker Frame 17.5F-3
Applicable Ratings
Voltage Breaking Current Normal Current
17.5kV 25kA NA 1600A1 2000A2 31.5kA NA 1600A1 2000A2 40kA 1250A1 1600A1 2000A2
1 These ratings do not use a heat sink 2 These ratings do use a heat sink
65A7355H01 December 2010 www.eaton.com 27
All Dimensions are in millimeters
Fig. 2-17: 24kV Fixed W-VACi Circuit Breaker Frame 24F-1
Applicable Ratings
Voltage Breaking Current
Normal Current
24kV 20kA 800A
28 65A7355H01 December 2010 www.eaton.com
All Dimensions are in millimeters
Fig. 2-18: 24kV Fixed W-VACi Circuit Breaker Frame 24F-2
Applicable Ratings
Voltage Breaking Current Normal Current
24kV 25kA 1600A1 2000A2 1 These ratings do not use a heat sink 2 These ratings do use a heat sink
65A7355H01 December 2010 www.eaton.com 29
All Dimensions are in millimeters
Fig. 2-19: 24kV Fixed W-VACi Circuit Breaker Frame 24F-3
Applicable Ratings
Voltage Breaking Current
Normal Current
24kV 25kA 2500A
30 65A7355H01 December 2010 www.eaton.com
3 Receiving, handling and storage
3.1 Receiving Until the circuit breaker is ready to be delivered to the installation site, DO NOT remove container. When the circuit breaker is placed in storage, maximum protection can be obtained only when the circuit breaker is placed in storage and is in its original packaging. Inspect the container for any signs of damage or rough handling upon receipt. Open the container carefully to avoid any damage to the contents. Be careful that any loose items or hardware are not discarded with the packing material. When opening the container, check the content of each package against the packing list. Examine the circuit breaker for any sign of shipping damage such as broken, missing or loose hardware, and damaged or deformed insulation. File claims immediately with the carrier if damage or loss is detected and notify the appropriate Eaton representative.
3.2 Handling
WARNING Do not use a lifting device as a platform for performing inspection or repair on the circuit breaker, nor for operating the contacts or charging the springs. The breaker may fall, causing severe personal injury. Always use a suitable workbench capable of supporting the breaker.
The circuit breaker shipping containers are designed to be handled either by use of a rope sling and overhead lifting device or by a fork truck. If containers must be moved, it is preferable to use one of the above methods, roller conveyors, or individual pipe rollers. After inspecting for potential shipping damage, the breaker should be returned to its original shipping container until it is ready to be installed. When a circuit breaker is ready for installation, a removable lifting bar in conjunction with an overhead lifter or portable floor lifter can be used to move the breaker. If the circuit breaker is to be lifted, the lifting bar must be positioned over the circuit breaker and the bar must be inserted into the circuit breaker side openings with the lifting hole toward the interrupters. Once the lifting bar is securely seated in the lifting holes, the circuit breaker can be carefully lifted and moved.
3.3 Storage If the circuit breaker is placed in storage, it must be kept in the original packaging for maximum protection. The circuit breaker is shipped with its contacts open and closing springs discharged. The indicator on the front panel should confirm this. Refer to Section 4 for detailed information on both manual and electrical operation of the circuit breaker. Outdoor storage is NOT recommended. However, if unavoidable, the outdoor location must be well drained and a temporary shelter from sun, rain, snow, corrosive fumes, dust, dirt, falling objects and excessive moisture must be provided. Containers should be arranged to permit free circulation of air on all sides and temporary heaters should be used to minimize condensation. Moisture can cause rusting of metal parts and deterioration of high voltage insulation. A heat level of approximately 400 watts for each 3 cubic meters of volume is recommended with the heaters distributed uniformly throughout the structure near the floor. Indoor storage should be in a building with sufficient heat and circulation to prevent condensation. If the building is not heated, the same rules for outdoor storage should be applied.
65A7355H01 December 2010 www.eaton.com 31
3.4 Lifting of Circuit Breakers Always consider the center of gravity of the breaker may induce the breaker to tip over. If a breaker has a single hole on each side and a picture of a lifting hook, as shown in Fig. 3-1, use lifting straps and hooks to attach to the circuit breaker at those points to lift the circuit breaker. When the circuit breaker has a single lifting hole with two additional bolt holes, use the lifting attachments shown in Fig. 3-2 to attach to the breaker. Then attach the lifting straps and hooks to the attachments. When using any lifting equipment, remove the lifting equipment before installing the circuit breaker into the switchgear.
3.5 W-VACi Circuit Breaker Weights
Table 3- 1: 12kV Circuit Breaker weights 12 kV Circuit Breaker Weights(kg)*
630A 800A 1250A 1600A 2000A
Fixe
d
25kA 83 90 91 129 129
26.3kA 83 90 91 129 129
31.5kA 92 93 94 129 129
40kA N/A N/A 131 131 131
With
draw
able
25kA 110 122 122 172 172
26.3kA 110 122 122 172 172
31.5kA 123 123 124 173 173
40kA N/A N/A 173 173 173
*±3kg.
Table 3- 2: 17.5 kV Circuit Breaker Weights 17.5 kV Circuit Breaker Weights(kg)
630A 800A 1250A 1600A 2000A
Fixe
d
25kA 84 91 92 130 130
31.5kA 93 93 93 131 131
40kA N/A N/A 132 132 132
With
draw
able
25kA 111 123 124 173 173
31.5kA 124 124 125 174 174
40kA N/A N/A 174 174 174
Fig. 3-1: Lifting Point
Fig. 3-2: Lifting Attachments
Table 3- 3: 24 kV Circuit breaker Weights 24 kV Circuit Breaker Weights(kg)
800A 1600A 2000A 2500A
Fixe
d
20kA 104 N/A N/A N/A
25kA 156 157 158 159
With
draw
able
20kA 142 N/A N/A N/A
25kA 232 233 234 235
*±3kg.
*±3kg.
32 65A7355H01 December 2010 www.eaton.com
3.6 Photographic Description
Fig. 3-3: Front view of W-VACi Withdrawable Circuit Breaker Element
1. Secondary Disconnect 7. Operation Handle for Shout-bolts 2. Manual Charging Handle 8. Front Panel 3. Manual Close Button 9. Nameplate 4. Closed/Open Indicator 10. Spring Charged/Discharged Indicator 5. Manual Open Button 11. Operation Counter 6. Racking in Assembly 12. Coupling Lever for Racking in and out
Fig. 3-4: Internal view of W-VACi Circuit Breaker Element
1. Universal Mechanism Assembly (UMA) 7. Charging Motor 2. Closing Spring 8. Integral Charging Handle 3. Spring Charged / Discharged Indicator 9. Manual Close Button 4. Operation Counter 10. Closed / Open Indicator 5. Hydraulic Damper 11. Manual Open Button 6. Auxiliary switch
1 2 3 4 5 6 7
8 9 10 11 12
1 2 3 4 5 6
7 8 9 10 11
W-VACi with Breaker
Heat Sink EncapsulUnit Racking iAssemblyWheel
150 mm Pole
k
ated Pole
n y
Spacing W
BFig. 3-5:
Fig. 3-6:
W-VACi with21Breaker W-VACi Circuit
: Typical Rear V
0 mm Pole Sp
t Breaker Withd
View of a Withdr
acing W-VBre
rawable Frames
rawable W-VAC
VACi with275 meaker s
i
Finge Rack
mm Pole Spac
er Cluster
king in Assemb
cing
ly
34 65A7355H01 December 2010 www.eaton.com
4 Inspection 4.1 Inspection
WARNING • Do not work on a breaker in the "service"
position. • Do not work on a breaker with secondary
disconnects engaged. • Do not work on a breaker with springs
charged or contacts closed. • Do not override any safety interlocks. • Do not leave the charging handle in working
location after charging the closing springs. • Do not stand less than one meter away from
the breaker when testing for vacuum integrity.
4.2 Frequency of Inspection It is recommended to inspect the breaker when it is received. In cases where the breaker operates in a clean and non-corrosive environment, the circuit breaker should be inspected after 10 years or 10,000 operations, whichever comes first. In dusty and/or corrosive environment, inspection should be performed at least once a year. Additionally, it is recommended to inspect the breaker every time it interrupts a fault current.
4.3 Inspection Process See Table 4-4 and follow the steps to inspect the breaker.
4.4 Vacuum Interrupter Integrity Test
Vacuum interrupters used in all W-VACi circuit breakers are highly reliable interrupting elements. Satisfactory performance of these devices is dependent upon the integrity of the vacuum in the interrupter and the internal dielectric strength. Both of these parameters can be readily checked by a one minute AC high potential test. During this test, the following warning must be observed:
Table 4-1: Testing Ratings Breaker Testing Voltage 12kV 28kV 17.5kV 38kV 24kV 50kV This test should be done with the breaker in “OPEN” position.
WARNING Applying abnormally high voltage across a pair of contacts in vacuum may produce x-radiation. The radiation may increase with the increase in voltage and/or decrease in contact spacing. X-radiation produced during this test with recommended voltage and normal contact spacing is extremely low and is well below maximum levels.
WARNING After the high potential test is conducted, an electrical charge may be retained by the vacuum interrupters. Failure to discharge this residual electrostatic charge could result in an electrical shock. Follow safety procedures for this type of test.
4.5 Insulation Inspection Insulation inspection is performed to keep all insulating surfaces clean. This can be done by wiping all insulating surfaces with a dry lint free cloth and denatured alcohol. In case there is any tightly adhering dirt that will not come off by wiping, it can be removed with a mild solvent or distilled water. Confirm that the surfaces are dry before placing the breaker in service. If a solvent is required to remove the dirt, once the switchgear has been isolated, use benzene or white spirit. Secondary control wiring requires inspection for tightness of all connections and damage to insulation.
4.6 MaThe resistancefollows: Ensur100A current tresistance witcannot exceedconducting thiNOT attach thas reference.
Table Breaking Cu
25kA
26.3kA
31.5kA
40kA
MechanisCarefully inspparts such as excessive weaOperate the belectrically. Chverify that theylimits. Refer to2.4 and 2.5 fo
4.7 ToT
Nominal sizepitch M5 x 0.80 M6 x 1.00 M7 x 1.00 M8 x 1.25 M10 x 1.50 M12 x 1.75 M14 x 2.00
ain Circuit e of the main cre the breaker to the main circh the help of a d the value in tis test with a w
he test clamp to
4-2: Resistanceurrent Fix
Re
≤35
≤35
≤20
≤15
m Inspectiect the mechanbolts, nuts, pin
ar or damage treaker severalheck the closiny are in accordo the technical r rated times.
orque specTable 4-3: Torque and
Resistanccircuit can be mis in closed stacuit, and meastest machine.
the Table 4-2. Wwithdrawable breo the springs. U
e chart of Main Cxed Dsistance (μΩ)
5 ≤4
5 ≤4
0 ≤3
5 ≤3
ion Check nism for any pons and rings. Co the breaker c times manuall
ng and openingdance with acceparameters se
cifications ue Specification
Newton Mete
6 10 18 25 50 88 141
ce Check measured as atus, deliver ure the The results
When eaker, DO
Use Fig. 4-1
Circuit .O.
45
45
35
30
ossible loose Check for components. ly and
g times to eptable ections 2.3,
ns
ers (Nm)
Wheclam
Whethe f
en testing circuimp onto the spri
en testing circuiinger cluster be
Fig. 4-1:
it resistance: Dings when injec
it resistance: cletween the spr
Finger Cluster W
DO NOT directlycting current.
lamp directly orings as shown
Warning
y
nto .
36 65A7355H01 December 2010 www.eaton.com
Table 4-4: Inspection Process Chart Section Inspection Item Criteria Inspection Method Corrective Action
Insulation Drive insulator, barriers, and stand-off insulators
No dirt and no cracking Visual inspection
Clean with lint-free cloth or replace cracked piece
Insulation Integrity
Main circuit to ground Withstand AC High Potential
Test Clean and retest or replace
Between main circuit terminals Withstand AC High Potential
Test Clean and retest or replace
Control circuit to ground Withstand AC High Potential
Test Clean and retest or replace
Power Elements
Vacuum Interrupters Adequate vacuum Proceed with integrity check
If integrity check is not satisfactory, replace interrupter assembly
Primary disconnects No burning or damage or spring discoloration
Visual inspection Replace if burned, damaged, eroded or discolored
Control Circuit Parts
Shunt (Closing and Opening) release, including disconnects
Smooth and correct operation by control power
Test closing and tripping of the circuit breaker twice
Replace any defective parts
Wiring Securely tied in proper place Visual inspection Repair or tie as
necessary
Terminals Tight Visual inspection Tighten or replace if necessary
Motor Smooth, normal operation Functional Test Replace brushes or
motor
Operating Mechanism
Tightness of hardware
No loose or missing parts Visual and tactile Tighten or replace
parts Dust or foreign object
No dust or foreign object Visual check Clean as necessary
Lubrication Smooth operation and no excessive wear
Visual and tactile Contact Eaton rep. for recommendations
Deformation or Excessive Wear
No excessive deformation or wear
Visual and operational
Remove cause and/or replace parts
Manual Operation Smooth operation Manual charging, closing, and tripping
Correct per troubleshooting chart 6.9
65A7355H01 December 2010 www.eaton.com 37
4.8 Troubleshooting Chart
Symptom Inspection area Probable cause
Fail to Close
Closing-spring not charged
Motor Circuit
No control power (fuse blown or switch off) Secondary disconnect is not connected Motor cut-off switch or its push lever is damaged Loose wire terminal connections Motor failure
Closing-spring charged but breaker does not close
Shunt Closing Release circuit, when the plunger of the shunt does not pick up
No control power, or its out of voltage range (fuse blown or switch off, or wrong voltage applied) Secondary disconnects is not in service Anti-pumping device is in service Shunt closing release failure The breaker is between service and test position when it is in the switchgear
Mechanical Interlock, may override the plunger of the shunt close release may pick up
The breaker is between service and test position when it is in the switchgear
Closing spring is released, but the breaker fails to close.
Trip circuit is energized (trip free) Trip latch does not reset
Breaker does not close when manually pushing the close button
Mechanical Interlock The breaker is between service and test position when it is in the switchgear
38 65A7355H01 December 2010 www.eaton.com
Symptom Inspection area Probable cause
Undesirable Close
Undesirable Close
Control Circuit Shunt closing release circuit is energized Auxiliary switch does not switch properly
Mechanism Close release latch(does not reset) Close button does not reset in time
Fail to Trip
Breaker does not trip
Shunt trip release circuit
No control power, or its voltage is out of range (fuse blown or switch off, or wrong voltage applied) Secondary disconnect is not connected
Mechanism Entire mechanism non functional
Vacuum Interrupter One or more welded
Undesirable Trip
Undesirable Trip
Control Circuit Shunt trip circuit is energized Auxiliary switch does not switch properly
Mechanism
Trip latch is damaged Trip latch does not reset Manual trip push button “O” does not reset
5 InFu
Before placfollow the carefully. Nto a failureresulted in
Any wiring imust be follcause perm
5.1 IniOp
Before attempshould be exaand electricallthat Section 3Section 5 (circclosely reviewinto switchgea
5.2 MaWithdraw the Fig. 5-2. Charhandle clockwclosing springcharged state Return the hapress the “closbecomes discindicator now button (Fig. 5-indicator reads After completi“discharged” aanother checkbreaker opera
stallationunctional
Wcing the circuinstallation prNot following te to uncover d
faulty breake
Cinstructions prelowed precisely
manent equipme
itial Inspecperation pting to put the amined carefully three times. (Receiving, ha
cuit breaker dewed before procar.
anual Opercharging hand
rge the closing wise, as shown is charged, the(Fig. 3-4) turns
andle to its origse button” (Fig
charged and thereads “CLOSE-5). The breakes “OPEN”.
ng this check, and the breakek is ready to beation three time
n checks l Tests
WARNING it breaker in srocedure givethe procedureamage that m
er operation.
CAUTION esented in this y. Failure to doent damage.
ction and
circuit breakery and operatedIt is highly recoandling & storascription & opeceeding with in
ration Chele as shown in spring by turniin Fig. 5-3. Whe indicator of ths to “charged”.
ginal resting pla. 5-4). The close breaker closeE”. Now press er is now open
leave the closier contacts “opee performed. Ches using this pro
and
service, n below
e can lead may have
document o so could
r in service, it d manually ommended age) and erations) are stallation
eck Fig. 5-1 & ng the hen the he spring
ace and sing spring es. Note the the “open” and the
ng springs en” until heck the ocedure.
Fig. 5-1: Pu
Fig. 5-2: Pull o
Fig. 5-3: Tu
Fig. 5
Fig. 5
ull the round ha
out the handle w
urn the handle c
5-4: Close manu
5-5: Open manu
ndle down
with two hands
clockwise
ually
ually
5.3 NaCompare the with technical 2.3, 2.4 or 2.5breaker outlinconformance discrepancy, cinstalling the c
5.4 VaCh
Clean all the idry, lint free clsection 4.4 aft
5.5 InsThe primary inneed to be ch4-1. This can and performin
5.6 MaCheck the mashould not excobtained valuefor value limits Note: Do not main contactfinger clusterprocess is no
5.7 EleAfter going thrready to be opcheck be madposition or disnot be in the c
ameplate circuit breaker data in the tec
5. Also comparee drawings andand compatibilcontact your Eacircuit breaker.
Fig. 5-6: Nam
acuum Inteheck nsulating surfaloth and denatuter this action is
sulation nsulation for theecked. Refer tobe done by clo
ng a power freq
ain Circuit ain circuit resistceed the permies for future res and procedur
apply test cut finger cluster location. Damot followed co
ectrical Oprough the prevperated electricde with a withdrsconnected poscell during this
nameplate infochnical paramee the breaker wd switchgear dity. In case of paton representa
me Plate Label
errupter Int
aces of the poleured alcohol. Rs completed.
e vacuum intero the procedureosing the circuitquency voltage
Resistanctance. The resiissible values. ference. Refer re.
rrent to the spr. Refer to Figmage can occ
orrectly.
perations Cious steps, thecally. It is preferawable breakesition. A fixed btest.
ormation ters sections
with the rawings for potential ative before
tegrity
e units with a Refer to
rrupters e in Table t breaker test.
ce Check stance Record the to Table 4-2
pring of g. 4-1 for cur if this
Check e breaker is rred that this er in a “Test” breaker can
Exammouthat insta
Extrthat checcompers
The enoperatispring wcharginfront comanuacharginobserveconfirm When tshould TEST pin the cthe sectesting with insout of tneeds thandle clockwiwithdra“CONNdistinctappliedhas reamechan After codischarbreaketo be p
mine the insidenting the breakmight interfere
allation.
eme caution mprimary circu
cks are performpartment. Faisonal injury or
ergy required bon is normally with a charging
ng handle is insover. The closinlly as previous
ng, closing or oe that the indic
m they are corre
testing a withdrbe done in the
position, the circell structure wcondary contacprocedure, the
serting and remhe cell structurto be racked inonto the rackin
ise for insertionawal. When theNECTED” posittive sound will bd to the rackingached “CONNEnism damage.
ompleting this crged, the breakr in “TEST” poserformed.
CAUTIONe of the cell befker for excessiv with the break
WARNINmust be exercuits are not enrmed in the brelure to do so m
r death.
by a circuit breprovided by ch
g motor. Make serted into the ng spring can aly described. W
opening operatication of the chect.
rawable breakee TEST positionrcuit breaker mith the shoot bo
cts engaged. Toe operator shoumoving the circure. When the cnto switchgear, ng coupling levn and counterce circuit breakeion during the be heard. Exc
g handle when tECTED” positio
check, leave thker contacts “opsition until anot
N fore inserting ove dirt or anythker travel or
G cised to ensurergized while eaker may result in
aker closing harging the clossure that the resting place inalso be chargeWhen performinions electricallyarging state to
er electrically, in. To achieve t
must first be plaolt engaged ano complete thisuld first be famuit breaker intoircuit breaker insert the rack
ver and rotate iclockwise for r has reached racking procesessive force the circuit brea
on could cause
he “closing spripen”, and the ther check is re
r hing
e
sing
n the d
ng y,
t he ced
nd s iliar
o and
king t
ss, a
aker
ngs”
eady
5.8 RaThe racking hcircuit breakerposition.
F
5.9 Ciwi
W-VACi circuiinterlocks. Thebreakers funct
Never disafor proper acould resuand/or provoltage pre
1. When the boperation of c“OPEN” opera 2. When the bfunction of antcannot actuate 3. When the bcannot be racposition to the 4. Withdrawabfrom the switcTEST position
acking hanandle is used trs from the test
Fig. 5-7: Rac
Fig. 5-8: Inserted
rcuit Breakth Switchgit breakers prove following list tion properly.
Wable any interloand safe operatlt in death, sevperty damage
esent.
breaker is in thelose cannot be
ation has been
breaker is in theti-pumping is oe.
breaker is in theked into the sw
e SERVICE pos
ble type breakechgear from then in the “CLOSE
ndle to move withdrat position to the
cking Handle
d racking Handl
ker Interacgear vide a number can help confir
WARNING ocks. They aretion. Failure tovere personal
e due to the haz
e “CLOSED” ste accomplished
completed.
e “CLOSED” ston, the spring re
e “CLOSED” stwitchgear from sition.
ers cannot be re SERVICE posED” state.
awable e service
le
ction
of safety rm the
e intended o comply injury zardous
tate, the d again until
tate and the elease
tate, it the TEST
acked out sition to the
5. With“CLOSand SE 6. For wmagnet“CLOSis connSERVIC 7. As toReleasmust codesign when y
drawable type E” and “OPEN
ERVICE positio
withdrawable btic interlock, thE” operation, u
nected and the CE position.
o other optionae (UVR) trip deonfirm their funneeds. Please
you ordered the
breakers cann” operations be
ons.
breakers with oe breaker cann
unless the secobreaker is eith
al parts, such asevice or an ovenction based one refer to your oe breaker.
not perform etween the TES
ptional electricnot finish the ondary disconner at TEST or
s, Under Voltager current trip, yn their system own specificatio
ST
cal
nect
ge you
ons
42 65A7355H01 December 2010 www.eaton.com
5.10 IEC Standard Interlocks The IEC standards require that an interlock be provided either on the breaker and or in the gear to prevent the user from removing the breaker improperly. Eaton has three ways to solve this IEC interlock issue.
5.11 Unitole UX Gear Door Interlocks
The Unitole UX switch gear has two interlocks included within the gear as a standard. Breakers that are ordered for use within the Eaton Unitole UX gear will have a special levering in assembly that includes a door interlock mounted on the breaker. The door interlock is used to keep the W-VACi breaker from being moved from the service position while the door of the switchgear is open. The interlock also prevents the W-VACi breaker from being racked into the switchgear from the test position to the service position while the door is open. The levering in cradle interlock functions in the following way: When Unitole UX gear door closes, it pushes on the lever (4). This intern moves the plate (3) and allows access to the spindle to engage the worm gear. As the cradle is racked-in, the hook (2) pivots around the pin (1) and catches on a corresponding pin mounded on the door, this locks the door closed when the breaker is in the service position. The Unitole UX gear second interlock works with the Eaton W-VACi breaker secondary disconnect. It is a wire form that hooks over the secondary disconnect. This prevents the secondary disconnect from coming out of its position, when it is installed in the switch gear. When the switch gear door is closed the roller switch (6) is pressed down which causes the wire form (5) to come down and press against the secondary disconnect (7). When the breaker is moved from the test position to the service position, then the wire form (5) prevents the secondary cable to be unplugged.
Fig. 5-9: Pull the round handle down
Fig. 5-10: Secondary Disconnect Interlock
5.12 Electromagnetic interlock The electromagnetic interlock shown in Fig. 5-11 is placed inside the breaker levering in cradle. It uses signals from the circuit breaker to determine if it should be electrical engaged or not. When engaged, the interlock will prevent the circuit breaker from being racked in or out of its current position. The locking coil prevents the breaker from being closed, unless the secondary cable is inserted and thus the voltage releases the locking coil, enabling the breaker to be closed. This option is commonly used by OEM’s instead of using the Unitole UX Switchgear solution shown in Fig. 5-9.
Fig. 5-11: Electromagnetic Interlock
5.13 Unique OEM Interlocks OEM’s can create there own interlocks to work with the Eaton W-VACi breaker. The interlocks created must make the complete solution to be in conformance to IEC standards. Please refer all questions in regards to unique OEM solutions directly with the OEM supplier.
1 2 3 4
5 6 7
65A7355H01 December 2010 www.eaton.com 43
6 Operation W-VACi circuit breakers open and close primary circuits using Eaton vacuum interrupters (VI). The device used to open and close the VI is the Universal Mechanism Assembly (UMA). It is a modular assembly design. It is a self contained functional unit. All W-VACi circuit breakers are operated by a front mounted simple spring charged, stored energy mechanism (Figure 6-2). The stored energy mechanism is normally charged by an electric motor, but also can be charged manually with a charging handle.
6.1 Encapsulated Pole Units The VI of the vacuum circuit breaker is incased in an epoxy resin which is cast by means of Automatic Pressure Gelation technology. This construction can effectively protect the vacuum interrupter from external influences, including external force impact, polluted environment and so on. The pole unit is mounted on the back of circuit breaker frame.
Fig. 6-1: Encapsulated Pole Unit (EPU) Structure
6.2 Electrical Circuit Current flows into poles from one conductor, through the VI and through an electrical connection, and flows out the other conductor.
6.3 Operating Mechanism
WARNING Keep hands and fingers away from the breaker's internal parts while the breaker contacts are closed or the closing springs are charged. The breaker contacts may open or the closing springs may discharge causing a serious injury. Discharge the springs and open the breaker before performing any breaker inspection or repair.
The operating mechanism uses stored energy from the closing spring (Fig. 6-2). The closing unit has one shunt closing release and the opening unit is composed of one or more shunt opening release coil(s). Both have auxiliary switches and indicating devices which are all installed in the circuit breaker frame. Closing and opening buttons, the manual charging handle, spring charging state indicator, and closed/open indicators are all front accessible.
Fig. 6-2: Universal Mechanism Assembly (UMA)
1. Closing Spring 6. Close Button 2. Charge Indicator 7. Charging Handle 3. Operations Counter 8. Optional Shunt Opening Release Location 4. Auxiliary Switches 9. Open Button 5. Motor
TOP CONDUCTOR
BOTTOM CONDUCTOR
VACUUM INTERRUPTER (Internal)
PUSH ROD ASSEMBLY
HEAT SINK
1 2 3 4
5 6 7 8 9
Fig. 6-3:
1. Motor 2. Close Button3. Shunt Closin
6.4 ChThe energy reprovided by chmotor or manuWhen electricmotor actuatecharging, the gpinion gear thOnce chargedand the motorsupply of the cnow ready for
6.5 ClThe closing opmanually presoperation to aOnce closed, circuit for the pthe same timecounting functmain auxiliaryswitches and sof the mechanFigure6-9 on t
Universal MechRight Si
n ng Release
harging equired for a cirharging a closiually charging wally charging, ts a gear drive gear driving syat is attached t
d, the indicator r cutting switchcharging motorclosing.
osing peration is accossing the “CLOSctuate the shuthe indicator wpower supply te the counter istion and the dri
y switch to transsensors betwenism can be sethe following pa
hanism Assembide View 4. Shunt Opening 5. Open Button
rcuit breaker clng spring usingwith the chargithe output shafsystem. When
ystem is actuateto the chargingwill display “CH will break the r. The circuit b
omplished by eSE” button or bnt opening rele
will read “CLOSo the motor is
s actuated to peiving linkage acsfer states of th
een on and off. een in Figures 6age.
bly (UMA)
Release
osing is g a charging ng handle. ft of the n manually ed through a
g handle. HARGED” power
breaker is
either by remote ease coil. ED” and the returned. At erform the ctuates the he other The 4 states
6-6 through
1 2 3 4 5
Fig
Closing Spri Gear Closing SpriSignaling Contacts
g. 6-4: Universal
Fig. 6-5: M
ng
rs
ng
l Mechanism AsSide View
Manual Charging
ssembly (UMA)
g Process
Left
45 65A7355H01 December 2010 www.eaton.com
Fig. 6-6: Breaker Open and Closing Spring
Discharged Fig. 6-7: Breaker Closed and Closing Spring
Discharged
Fig. 6-8: Breaker Open and Closing Spring Charged Fig. 6-9: Breaker Closed and Closing Spring Charged
1-Closing Spring 2-Closing Spring Lever 3-Spring Release D Shaft 4-Close Roller 5-Cam
6-Cam Shaft
7-Main Roller
8-Trip bar D Shaft
9-Trip Latch
10-Drive Shaft
11-Spring Release Latch
1 3 4 5 6 8 9 10
11 2 7
11 2 7
1 3 4 5 6 8 9 10
1 3 5 6 8 7 9 10
2 11 4
1 3 5 6 8 9 10
2 11 4 7
46 65A7355H01 December 2010 www.eaton.com
6.6 Opening The opening operation is accomplished by either manually pushing the “open” button or connecting the external power supply to actuate the shunt opening release coil. The breaker uses a hydraulic damper to help absorb some of the opening force. Once the breaker is open, the indicator will display “OPEN”.
6.7 Control Schemes Refer to Fig. 6-10 for the W-VACi circuit breaker diagram.
6.8 Selective Parts Configuration The voltages for the secondary control circuit can be: 24-48-60-110-125-220-250 VDC and 120-220-230 VAC. Configurations and electrical parameters for selective parts are presented in the next few sections. Rated Parameters of UMA Motor1
Item Value Rated
Voltage Ua (DC) 24-48-60-110-125-220-250 V
Rated Voltage Ua (AC) 110-120-220-230 V
Voltage Range 85%-110% rated voltage
Time for Charging (S) ≤15
Rated Parameters of Releases1 Item Value
Rated Voltage Ua (DC) 24-48-60-110-125-220-250 V
Rated Voltage Ua (AC) 110-120-220-230 V
Rated Current(A) ≤3 ≤2 ≤5 ≤5 ≤10
Voltage Range*
Shunt opening release:85%-110%;
Shunt closing release:70%-110%;
Rated Parameters of Undervoltage Release1
Item Value Rated
Voltage Ua (DC) 24-48-60-110-125-220-250 V
Rated Voltage Ua (AC) 110-120-220-230 V
Operating Limits
0-35%Ua:UVR operates, circuit breaker opens 70-110% Ua:UVR does not operate
Rated Parameters of Electromagnetic Interlock1
Item Value Rated
Voltage Ua (DC) 24-48-60-110-125-220-250 V
Rated Voltage Ua (AC) 110-120-220-230 V
Operating Limits 85-110% Ua
Continuous Power(Pc)
DC=5 W AC=5 UA
1 Insulation voltage for all electronic parts is 2000 V 50/60 Hz (for 1 min.)
65A7355H01 December 2010 www.eaton.com 47
Fig. 6-10: Control Schematic
48 65A7355H01 December 2010 www.eaton.com
Fig. 6-11: Control Schematic
65A7355H01 December 2010 www.eaton.com 49
Fig. 6-12: Control Schematic
50 65A7355H01 December 2010 www.eaton.com
Fig. 6-13: Control Schematic
65A7355H01 December 2010 www.eaton.com 51
Fig. 6-14: Control Schematic
52 65A7355H01 December 2010 www.eaton.com
Fig. 6-15: Control Schematic
65A7355H01 December 2010 www.eaton.com 53
Fig. 6-16: Control Schematic
54 65A7355H01 December 2010 www.eaton.com
Fig. 6-17: Control Schematic
65A7355H01 December 2010 www.eaton.com 55
Fig. 6-18: Control Schematic
56 65A7355H01 December 2010 www.eaton.com
Fig. 6-19: Control Schematic
57 65A7355H01 December 2010 www.eaton.com
7 Renewal parts 7.1 General In order to minimize production downtime, it is recommended that an adequate quantity of spare parts be carried in stock. The quantity will vary from customer to customer, depending upon the service, severity and continuity requirements. Refer to Table 7-1 for guidance.
7.2 Ordering Instructions a.) Always specify the breaker rating information and style number. b.) Describe the item, provide the style number, and specify the quantity required. c.) Specify the control voltage for electrical components. d.) Specify the method of shipping desired. e.) Send all orders or correspondence to the appropriate Eaton representative.
7.3 Standard accessories Table 7-1 Standard Accessories
Shunt Opening Release (ST1) This device allows for remote opening control of the circuit breaker and can operate with both direct and alternating current.
24 VDC / 8.9A 65A7002G01
48 VDC / 4.4A 65A7002G02
60 VDC / 4.3A 65A7002G13
110-125 VDC / 2.7A 65A7002G04
220-250 VDC / 1.5A 65A7002G06
110-120 VAC / 2.6A 65A7002G10
220-230 VAC / 1.4A 65A7002G12
Attributes
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 70…110% Ua (DC) 85…110% Ua (AC)
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
Shunt Closing Release (SR) This device allows for remote closing control of the circuit breaker and can operate with both direct and alternating current.
24 VDC / 8.9A 65A7004G01
48 VDC / 4.4A 65A7004G02
60 VDC / 4.3A 65A7004G13
110-125 VDC / 2.7A 65A7004G04
220-250 VDC / 1.5A 65A7004G06
110-120 VAC / 2.6A 65A7004G10
220-230 VAC / 1.4A 65A7004G12
Attributes
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 70…110% Ua (DC) 85…110% Ua (AC)
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
Charging Motor (M) (40kA and below)This device charges the mechanism closing springs electrically. In the event of a loss of power the mechanism closing springs can be charged manually.
24 VDC / 7.2A 65A7013G01
48 VDC / 3.6A 65A7013G02
60 VDC / 2.8A 65A7013G13
110-125 VDC / 1.7A 65A7013G04
220-250 VDC / 1.0A 65A7013G06
110-120 VAC / 1.7A 65A7013G10
220-230 VAC / 0.8A 65A7013G12
Attributes 90 Watt 0.8A
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 85…110% Ua
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
Breaker AuStandard cibreaker, the
24 V
48 V
60 V
110-12
220-25
110-12
220-23
AInsula
Closing SpThis deviceIt uses a mi
24 V
48 V
60 V
110-12
220-25
110-12
220-23
AInsula
Position CoFitted in theservice, tes
24 V
48 V
60 V
110-12
220-25
110-12
220-23
AInsu
Racking HaThis devicebe used for
Rac
uxiliary Contacrcuit breakers erefore 4A / 4B
VDC / 10.0A
VDC / 6.0A
VDC / 5.0A
25 VDC / 2.9A
50 VDC / 1.7A
0 VAC / 14.5A
30 VAC / 9.5A
Attributes ating voltage
pring Signaling is used to signicro-switch that
VDC / 4.0A
VDC / 2.5A
VDC / 2.0A
25 VDC / 0.9A
50 VDC / 0.4A
20 VAC / 9.5A
30 VAC / 5.0A
Attributes ating voltage
ontacts (S8 &e levering-in ast, or disconnec
VDC / 10.0A
VDC / 7.0A
VDC / 6.0A
25 VDC / 3.7A
50 VDC / 0.9A
20 VAC / 5.0A
30 VAC / 2.5A
Attributes lating voltage
andle is used to manall of the circu
king Handle
cts (S1 & S2)contain a 10A
B contacts are a
IE
g Contact (LSnal whether thet allows remote
& S9) ssembly, these cted position.
IE
nually rack theuit breakers on
/ 10B auxiliary available for the
65A7009G02
C Contact Class 1,
S1) e operating mee signaling of th
65A7014G01
contacts are u
65A7012G01
C Contact Class 1,
circuit breakera particular site
65A7023G01
switch. 6A / 6Be end user.
, Rated Continuous2000 V 50/60
chanism’s closhe state of the
2000 V 50/60
used to identify
, Rated Continuous2000 V 50/60
r into the switche.
B contacts are
s Current 10A, BreaHz (for 1 min.)
sing spring is cclosing spring.
Hz (for 1 min.)
if the circuit br
s Current 10A, BreaHz (for 1 min.)
hgear. One un
used by the ci
aking Capacity 440
harged or disch.
reaker is in the
aking Capacity 440
it of this device
rcuit
0W
harged.
0W
e can
7.4 Optional accessories
Table 7-2 Optional Accessories Shunt Opening Release #2 (ST2) Like the shunt opening release, this device allows for remote opening control of the circuit breaker. It can be supplied by a circuit completely independent from the shunt opening release #1.
24 VDC / 8.9A 65A7003G01
48 VDC / 4.4A 65A7003G02
60 VDC / 4.3A 65A7003G13
110-125 VDC / 2.7A 65A7003G04
220-250 VDC / 1.5A 65A7003G06
110-120 VAC / 2.6A 65A7003G10
220-230 VAC / 1.4A 65A7003G12
Attributes
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 70…110% Ua (DC) 85…110% Ua (AC)
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
Mechanism Electromagnet Interlock (IC1) This device protects the operating mechanism from being unsafely activated in the event that the control circuit is not energized.
24 VDC 65A7019G01
48 VDC 65A7019G02
60 VDC 65A7019G13
110-125 VDC 65A7019G04
220-250 VDC 65A7019G06
110-120 VAC 65A7019G10
220-230 VAC 65A7019G12
Attributes
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 85…110% Ua
Continuous Power (Pc) DC= 5 W AC= 5 VA
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
65A7355H01 December 2010 www.eaton.com 61
Undervoltage Release (UVR) This device opens the circuit breaker when there is notable lowering or loss of its power supply. It can operate with both direct and alternating current.
24 VDC 65A7006G01
48 VDC 65A7006G02
60 VDC 65A7006G13
110-125 VDC 65A7006G04
220-250 VDC 65A7006G06
110-120 VAC 65A7006G10
220-230 VAC 65A7006G12
Attributes
Ua (DC) 24-48-60-110-125-220-250 V
Ua (AC) 110-120-220-230 V
Operating Limits 35-0% Ua: UVR operates, circuit breaker opens 70-110% Ua: UVR does not operate
Insulating voltage 2000 V 50/60 Hz (for 1 min.)
Fixed Circuit Breaker Interlock This mechanical device is used to prevent a miss-closing of the circuit breaker by discharging the closing spring when racking the breaker in or out. It is used on fixed circuit breakers that are converted to draw-out circuit breakers by the customer
Fixed Circuit Breaker Interlock
65A7020G01 12 / 17.5 kV all frames
24 kV 210 Pole Spacing
65A7020G02 24 kV 275 Pole Spacing Only
8 Appendix Use the following charts to verify that the circuit breaker is in the correct operational status and that the received circuit breaker has the exact same equipment as ordered.
8.1 12 / 17.5 / 24 kV W–VACi Vacuum Circuit Breaker Operational Check List Breaker Type: # of Operations at Start: ________
List Explanation Result Reference Section
1 Check the parts for any that are damaged/loose/distortion/missing 3.2
2 Operate manually-charged/close/open 4.3
3 Check insulation of main circuit and control circuit 4.5
4 Check resistance of main circuit 4.6
5 Check the nameplate 4.2
6 Operate electrical-charge/close/open 4.7
7 Check the chassis with breaker 3.2
8 The counter does not advance properly 5.2.2
# of Operations at End: ________
Signature: ____________________ Date:_________________________
65A7355H01 December 2010 www.eaton.com 63
8.2 W–VACi Vacuum Circuit Breaker Equipment Check List Customer Name: Eaton Order: Customer PO : Quantity: Date of Delivery: YYYY_______ MM______ DD_____
Technical Parameters of Breaker
Type W-VACiR Fixed W-VACi Withdrawable
Rated Voltage (kV) 12 17.5 24
Normal Current (A) 630 800 1250 1600 2000 2500
Short Circuit Breaking Current
(kA) 20 25 26.3 31.5 40
Pole To Pole (mm)* Distance 150 210 275
Technical Parameters of UMA Mechanism
Shunt Opening Release (Ua)
24VDC
48VDC
60VDC
110VDC
125VDC
220VDC
250VDC
110VAC
120VAC
220VAC
230VAC
Shunt Opening Release #2 (Ua)
24VDC
48VDC
60VDC
110VDC
125VDC
220VDC
250VDC
110VAC
120VAC
220VAC
230VAC
Shunt Closing Release (Ua)
24VDC
48VDC
60VDC
110VDC
125VDC
220VDC
250VDC
110VAC
120VAC
220VAC
230VAC
Charging Motor(Ua) 24VDC
48VDC
60VDC
110VDC
125VDC
220VDC
250VDC
110VAC
120VAC
220VAC
230VAC
Additional Equipment
Under-Voltage Release
24VDC
48VDC
60VDC
110VDC
125VDC
220VDC
250VDC
110VAC
120VAC
220VAC
230VAC
Mechanism Electromagnet
Interlock 24VD
C 48VD
C 60VD
C 110V
DC 125V
DC 220V
DC 250V
DC 110V
AC 120V
AC 220V
AC 230V
AC
Racking Handle Second Set Breaker of Auxiliary Contacts
Unitole UX Gear Door Interlock
Eaton’s Eleader in pquality, comonitoringwith Eatonservices, tcustomer-solutions tneeds of tinstitutionacommercicritical, altmarkets w
EuEaP.O75ThTeFaSeww
SoEaAvCoAnKmCaTeeaww
lectrical Sectorpower distributontrol and autog products. Whn’s full-scale enthese products-driven PowerCto serve the pothe data centeral, public sectoal, residential, ternative energ
worldwide.
urope, Middle East anaton Electric B.V. O. Box 23 50 AA Hengelo e Netherlands
el.: +31 74 246 4012 ax: +31 74 246 4601 ecretariaatCSsystems@ww.eatonelectrical.com
outh America aton Ltda. v. Pierre Simon de Lapond. Techno Park – Vinhanguera, m 104,5 ampinas - SP - 13069-el.: +55 19 2117 0000 tonelectricalbrasil@ea
ww.eaton.com.br
r is a global ion, power mation, and
hen combined ngineering s provide Chain™ ower system r, industrial, or, utility, IT, mission
gy and OEM
nd Africa
@eaton.com m
AsiEatHeaNo.ChaShaTelFaxww
place, 751 a
-320 - Brasil
aton.com
NorEatEle100MoUni877ww
PowerChaachieve suadvantagemanagemstrategic, iits life cyclsafety, greefficiency. www.eato
ia Pacificton Electrical Sector Aadquarters .3 Lane 280 Linhong Rangning District anghai 200335, P.R.C.: +86 21 5200 0099 x: +86 21 5200 0200
ww.eatonelectrical.com
rth Americaton Corporation
ectrical Sector 00 Cherrington Parkwaon Township, PA 1510ited States 7-ETN-CARE (877-386
ww.eaton.com
ain solutions heustainable andes through proaent of the poweintegrated assele, resulting in eater reliability
For more inforn.com/electrica
Asia Pacific
Road
China
m.cn
ay 08
6-2273)
elp enterprises competitive
active er system as aet throughout enhanced and energy rmation, visit al.
The information proreflects the generalreferenced productmay not reflect theiEaton Corporation modify the contentsand the characterisproducts without prCorporation does npotential errors or oin this document.
a
ovided in this documenl characteristics of thes at the time of issue ar future characteristicsreserves the right to s of this document stics of the referencedrior notification. Eatonnot assume liability foromission of information
nt and s.
n